<template>
    <view>
        <view class="wanl-product">
            <view class="product_warter" :class="dataStyle"
                v-if="dataStyle == 'col-2-10' || dataStyle == 'col-2-15' || dataStyle == 'col-2-20' || dataStyle == 'col-2-25' || dataStyle == 'col-2-30'">
                <view class="wanl-waterfall">
                    <view id="wanl-left-cloumn" class="wanl-cloumn">
                        <view class="warter left" v-for="(item, index) in leftList" :key="index"
                            @tap="handleGoods(item.id)">
                            <view class="img-wrap">
                                <image class="image" :src="item.image" mode="widthFix"></image>
                            </view>
                            <view class="content padding-bj">
                                <view class="text-cut-2">
                                    <!-- <block v-if="item.shop.isself == 1">
										<view class="cu-tag radius sm bg-red">自营</view>
									</block>
									<block v-else>
										<view class="cu-tag radius sm bg-gray" v-if="item.shop.state == 0">个人</view>
										<view class="cu-tag radius sm wanl-bg-blue" v-else-if="item.shop.state == 1">企业
										</view>
										<view class="cu-tag radius sm wanl-bg-orange" v-else-if="item.shop.state == 2">
											旗舰</view>
									</block>
									<block v-if="dataType === 'groups'">
										<view class="cu-tag radius sm bg-red">
											{{item.is_ladder === 1 ? '阶梯' : item.people_num+'人'}}拼团
										</view>
									</block> -->
                                    <text class="margin-left-xs">{{ item.title || item.name }}</text>
                                </view>
                                <view class="goods-tag">
                                    <!-- <view class="cu-tag radius sm line-red" v-if="item.shop.isself == 1">官方放心购</view>
									<view class="cu-tag radius sm line-gray" v-if="item.isLive"
										@tap="onLive(item.isLive)">LIVE</view> -->
                                </view>
                                <view class="flex align-center justify-between">
                                    <view class="text-red text-bold text-lg">
                                        <text class="text-price">{{ item.price || item.score }}</text>
                                        <text class="text-linePrice f-22" :style="{
                                            'text-decoration': 'line-through',
                                        }">{{ item.linePrice || item.price || item.line_original_price }}</text>
                                    </view>
                                    <view class="text-sm wanl-gray" v-if="dataType === 'groups'">
                                        <text>已拼团
                                            {{ $wanlshop.toFormat(item.groups_num, "hundred") }}
                                            件</text>
                                    </view>
                                    <!-- <view class="text-sm wanl-gray" v-else>
										<text>{{$wanlshop.toFormat(item.comment, 'hundred')}} 评价</text>
									</view> -->
                                </view>
                                <view class="jfen flex f-20" v-if="item.integral || item.score">
                                    <view class="flex left">
                                        <image class="jifen" :src="imageUrl + '/static/images/new/jfen.png'"
                                            mode="scaleToFill" />
                                        <text class="jf">{{ item.integral || item.score }}积分 </text>
                                    </view>
                                    <text class="add" v-if="item.type == 2">+￥{{ item.money }}</text>
                                </view>
                            </view>
                        </view>
                    </view>
                    <view id="wanl-right-cloumn" class="wanl-cloumn">
                        <view class="warter right" v-for="(item, index) in rightList" :key="index"
                            @tap="handleGoods(item.id)">
                            <view class="img-wrap">
                                <image class="image" :src="item.image" mode="widthFix"></image>
                            </view>
                            <view class="content padding-bj">
                                <view class="text-cut-2">
                                    <!-- <block v-if="item.shop.isself == 1">
										<view class="cu-tag radius margin-right-xs sm bg-red">自营</view>
									</block>
									<block v-else>
										<view class="cu-tag radius sm margin-right-xs bg-gray"
											v-if="item.shop.state == 0">个人</view>
										<view class="cu-tag radius sm margin-right-xs wanl-bg-blue"
											v-else-if="item.shop.state == 1">企业</view>
										<view class="cu-tag radius sm margin-right-xs wanl-bg-orange"
											v-else-if="item.shop.state == 2">旗舰</view>
									</block> -->
                                    <text>{{ item.title || item.name }}</text>
                                </view>
                                <view class="goods-tag">
                                    <!-- <view class="cu-tag radius sm line-red" v-if="item.shop.isself == 1">官方放心购</view>
									<view class="cu-tag radius sm line-gray" v-if="item.isLive"
										@tap="onLive(item.isLive)">LIVE</view> -->
                                </view>
                                <view class="flex align-center justify-between">
                                    <view class="text-red text-bold text-lg">
                                        <text class="text-price">{{ item.price || item.score }}</text>
                                        <text class="text-linePrice f-22" :style="{
                                            'text-decoration': 'line-through',
                                        }">{{ item.linePrice || item.price || item.line_original_price }}</text>
                                    </view>
                                    <view class="text-sm wanl-gray" v-if="dataType === 'groups'">
                                        <text>已拼团
                                            {{ $wanlshop.toFormat(item.groups_num, "hundred") }}
                                            件</text>
                                    </view>
                                    <!-- <view class="text-sm wanl-gray" v-else>
										<text>{{$wanlshop.toFormat(item.comment, 'hundred')}} 评价</text>
									</view> -->
                                </view>
                                <view class="jfen flex f-20" v-if="item.integral || item.score">
                                    <view class="flex left">
                                        <image class="jifen" :src="imageUrl + '/static/images/new/jfen.png'"
                                            mode="scaleToFill" />
                                        <text class="jf">{{ item.integral || item.score }}积分 </text>
                                    </view>
                                    <text class="add" v-if="item.type == 2">+{{ item.money }}</text>
                                </view>
                            </view>
                        </view>
                    </view>
                </view>
            </view>
            <!-- 普通布局 -->
            <view class="product_list" :class="dataStyle" v-else>
                <view class="item" v-for="(item, index) in dataList" :key="index" @tap="handleGoods(item.id)">
                    <view class="img-wrap">
                        <image :src="$wanlshop.oss(item.image, 125, 125)" mode="aspectFill"></image>
                    </view>
                    <view class="content padding-sm">
                        <view class="">
                            <view class="text-cut-2">
                                <!-- <block v-if="item.shop.isself == 1">
									<view class="cu-tag radius margin-right-xs sm bg-red">自营</view>
								</block>
								<block v-else>
									<view class="cu-tag radius sm margin-right-xs bg-gray" v-if="item.shop.state == 0">
										个人</view>
									<view class="cu-tag radius sm margin-right-xs wanl-bg-blue"
										v-else-if="item.shop.state == 1">企业</view>
									<view class="cu-tag radius sm margin-right-xs wanl-bg-orange"
										v-else-if="item.shop.state == 2">旗舰</view>
								</block> -->
                                <text>{{ item.title || item.name }}</text>
                            </view>
                            <view class="goods-tag">
                                <!-- <view class="cu-tag radius sm line-red" v-if="item.shop.isself == 1">官方放心购</view>
								<view class="cu-tag radius sm line-gray" v-if="item.isLive" @tap="onLive(item.isLive)">
									LIVE</view> -->
                            </view>
                        </view>
                        <view class="flex align-center justify-between">
                            <view class="text-red text-bold text-lg">
                                <text class="text-price">{{ item.price || item.score }}</text>
                                <text class="text-linePrice f-22" :style="{
                                    'text-decoration': 'line-through',
                                }">{{ item.linePrice || item.price || item.line_original_price }}</text>
                            </view>
                            <!-- <view class="text-sm wanl-gray">
								<text class="margin-right">{{$wanlshop.toFormat(item.comment, 'hundred')}} 评价</text>
								<text>{{ item.comment > 0 ? parseInt((item.praise / item.comment) * 100) : 0 }}%
									好评</text>
							</view> -->
                        </view>
                        <view class="jfen flex f-20" v-if="item.integral || item.score">
                            <view class="flex left">
                                <image class="jifen" :src="imageUrl + '/static/images/new/jfen.png'"
                                    mode="scaleToFill" />
                                <text class="jf">{{ item.integral || item.score }}积分 </text>
                            </view>
                            <text class="add" v-if="item.type == 2">+{{ item.money }}</text>
                        </view>
                    </view>
                </view>
            </view>
        </view>
    </view>
</template>

<script>
/**
 * wanlProduct 商品
 * @description 商品组件 深圳前海万联科技有限公司 https://www.wanlshop.com（除万联官方内嵌系统，未经授权严禁使用）
 * @著作权：WanlShop 登记号：2020SR0255711 版本：V1.0.0
 * @property {Array} dataList 列表数据
 * @property {String} dataStyle 列表样式
 * @example <wanl-product />
 */
export default {
    name: "wanlProduct",
    props: {
        dataList: {
            type: Array,
            required: true,
            default: function () {
                return [];
            },
        },
        dataStyle: {
            type: String,
            default: "col-2-20",
        },
        dataType: {
            type: String,
            default: "goods",
        },
    },
    data() {
        return {
            imageUrl: this.$imageUrl || "",
            addTime: 180,
            leftList: [],
            rightList: [],
            tempList: [],
            children: [],
        };
    },
    watch: {
        copyFlowList(nVal, oVal) {
            // 取差值，即这一次数组变化新增的部分
            let startIndex = Array.isArray(oVal) && oVal.length > 0 ? oVal.length : 0;
            if (nVal.slice(startIndex).length == 0) {
                this.leftList = [];
                this.rightList = [];
                this.tempList = this.cloneData(this.copyFlowList);
            } else {
                this.tempList = this.tempList.concat(this.cloneData(nVal.slice(startIndex)));
            }
            this.splitData();
        },
    },
    mounted() {
        this.tempList = this.cloneData(this.copyFlowList);
        this.splitData();
    },
    computed: {
        // 破坏flowList变量的引用，否则watch的结果新旧值是一样的
        copyFlowList() {
            return this.cloneData(this.dataList);
        },
    },
    methods: {
        async splitData() {
            if (!this.tempList.length) return;
            let rightRect = await this.getRect("#wanl-right-cloumn");
            let leftRect = await this.getRect("#wanl-left-cloumn");
            // 如果左边小于或等于右边，就添加到左边，否则添加到右边
            let item = this.tempList[0];
            if (!item) return;
            item.image = this.$wanlshop.oss(item.image, 172, 0, 1);
            item.comment = this.$wanlshop.toFormat(item.comment, "hundred");
            item.praise = item.comment > 0 ? parseInt((item.praise / item.comment) * 100) : 0;
            if (leftRect.height < rightRect.height) {
                this.leftList.push(item);
            } else if (leftRect.height > rightRect.height) {
                this.rightList.push(item);
            } else {
                // 这里是为了保证第一和第二张添加时，左右都能有内容
                // 因为添加第一张，实际队列的高度可能还是0，这时需要根据队列元素长度判断下一个该放哪边
                if (this.leftList.length <= this.rightList.length) {
                    this.leftList.push(item);
                } else {
                    this.rightList.push(item);
                }
            }
            // 移除临时列表的第一项
            this.tempList.splice(0, 1);
            // 如果临时数组还有数据，继续循环
            if (this.tempList.length) {
                setTimeout(() => {
                    this.splitData();
                }, this.addTime);
            }
        },
        // 复制而不是引用对象和数组
        cloneData(data) {
            return JSON.parse(JSON.stringify(data));
        },
        getRect(selector, all) {
            return new Promise((resolve) => {
                let query = null;
                // 支付宝小程序不能加后面的.in(this)，是它自身的限制
                // #ifndef MP-ALIPAY
                query = uni.createSelectorQuery().in(this);
                // #endif
                // #ifdef MP-ALIPAY
                query = uni.createSelectorQuery();
                // #endif
                query[all ? "selectAll" : "select"](selector)
                    .boundingClientRect((rect) => {
                        if (all && Array.isArray(rect) && rect.length) {
                            resolve(rect);
                        }
                        if (!all && rect) {
                            resolve(rect);
                        }
                    })
                    .exec();
            });
        },
        handleGoods(id) {
            if (this.dataType === "goods") {
                this.onGoods(id);
            } else if (this.dataType === "groups") {
                this.$wanlshop.to(`/pages/apps/groups/goods?id=${id}`);
            } else if (this.dataType === "score") {
                this.$wanlshop.to(`/pages/user/member/details?id=${id}`);
            }
        },
    },
};
</script>

<style lang="scss" scoped>
.wanl-waterfall {
    display: flex;
    flex-direction: row;
    align-items: flex-start;

    .wanl-cloumn {
        display: flex;
        flex: 1;
        flex-direction: column;
        height: auto;
        width: 50%;

        .wanl-image {
            width: 100%;
        }
    }
}

.text-linePrice {
    text-decoration: line-through;
    font-weight: normal;
    color: #ccc;
}

.text-linePrice::before {
    content: "¥";
    font-weight: normal;
    color: #ccc;
    margin-left: 10rpx;
}

.jfen {
    margin-top: 20rpx;

    .left {
        background: #fbe7ce;
        border-radius: 6rpx;
        padding: 0 10rpx 0 0;
    }

    .jifen {
        width: 48rpx !important;
        height: 32rpx !important;
    }

    .add {
        margin-left: 10rpx;
        font-size: 24rpx;
        color: #ea321b;
    }
}
</style>
